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Exploited vulnerability · CISA KEV

Is CVE-2019-9082 exploited? Yes: in CISA KEV since 3 Nov 2021

Gociux · ThinkPHP · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2019-9082, ThinkPHP Remote Code Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, 983 days after it was published. It affects ThinkPHP. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 3 Nov 2021
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity8.8CVSS 3.1 · high
US federal due3 May 2022BOD 22-01 deadline

What it is

ThinkPHP contains an unspecified vulnerability that allows for remote code execution via public//?s=index/\think\app/invokefunction&function=call_user_func_array&vars[0]=system&vars[1][]= followed by the command.

VendorThinkPHP (2 exploited CVEs in KEV)
ProductThinkPHP
VulnerabilityThinkPHP Remote Code Execution Vulnerability
WeaknessCWE-306, CWE-94
Published24 Feb 2019
Added to KEV3 Nov 2021
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for ThinkPHP in your asset inventory, including appliances and cloud images. Stack check lists every exploited ThinkPHP CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 24 Feb 2019.
  4. Get told next time. Email alerts when CISA adds a CVE for ThinkPHP.

References

Questions

Is CVE-2019-9082 being exploited?

Yes. CISA added CVE-2019-9082 to the Known Exploited Vulnerabilities catalog on 3 Nov 2021, which means there is reliable evidence of exploitation in the wild.

Is CVE-2019-9082 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2019-9082?

Apply updates per vendor instructions. Check ThinkPHP's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected ThinkPHP and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in November 2021 · ThinkPHP scorecard · act-now radar.

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